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Hydrakos D25RE050FP00 Proportional Dosing Pump
₺83,331.28
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Installation is a service · plumbing is the customer’s responsibility
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Across Türkiye · 1–3 business days
2-Year Warranty
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- SKU
- WP-PM-006
- Category
- Booster Pumps, Whole House & Building Inlet Systems, Well Water Treatment, Water Treatment Spare Parts
SEKO Hydrakos · No Electricity · 1–5% Dosing
Proportional Dosing Without Electricity: the Hydrakos D25RE050FP00
The Hydrakos D25RE050FP00 is a water-powered proportional dosing pump that connects directly to the main water line and draws its energy solely from the pressure and flow of the water. This model from SEKO’s Hydrakos series works at water flow rates of 10–2,500 l/h and pressures of 0.3–6 bar; it mixes the concentrated product into the water at a rate of 1–5% and holds that rate even when the flow in the line changes.
- Water Flow Rate
- 10–2,500 l/h
- Dosing Rate
- 1–5%
- Working Pressure
- 0.3–6 bar
01Problem & Solution
A Fixed Ratio Is Hard to Hold When Flow Varies
Problem
The Flow Changes, the Ratio Drifts
On irrigation, process and washing lines the water flow rate changes continuously through the day. When dosing is done by hand or at a fixed speed, the product is sometimes given in excess and sometimes too little; consumption costs rise and the target mixing ratio is never held. Dosing in proportion to flow with an electric pump, on the other hand, needs a power line and an additional control connection.
Solution
Proportional Dosing Powered by Water
The Hydrakos D25RE050FP00 uses the water pressure in the line as its energy source and injects product at a fixed percentage in proportion to the volume of water passing through the pump. Even if the flow or pressure fluctuates, the ratio is maintained; when the water flow stops, dosing also stops on its own.
02Key Features
Electricity-Free, Precise, Practical
The Hydrakos D25RE050FP00 brings the hydraulic motor and the dosing piston together in one body; it is designed with low running and maintenance costs in mind.
No Electricity Required
It draws its energy from water pressure; it consumes no electricity and can also be installed at remote points with no power line.
Dosing in Proportion to Flow
The product injected is directly proportional to the volume of water passing through the pump; even when the flow changes, the mixing ratio stays constant.
Adjustable 1–5% Rate
The dosing rate is set in percentage steps, giving mixing ratios between 1:100 and 1:20.
Self-Priming
It draws the product from the tank without needing to be primed by hand and, through internal mixing, adds it to the water inside the pump.
Stops When the Flow Stops
When the water flow is cut, dosing also stops automatically; no product is injected into the line while there is no flow.
PP Body, FPM Seals
A general-purpose PP body with broad chemical compatibility; suitable for fresh, salt and deionised water.
03Technical Specifications
Product Details
| Feature | Value | What it does |
|---|---|---|
| Product Type | Water-Powered Dosing Pump | The product family it belongs to. When buying a spare, the family alone is not enough; the size and model must match too. |
| Model Code | D25RE050FP00 | |
| Drive | Water Pressure (No Electricity) | |
| Water Flow Rate | 10 – 2,500 l/h | |
| Working Pressure | 0.3 – 6 bar | |
| Dosing Rate | 1 – 5% | |
| Mixing Ratio | 1:100 – 1:20 | |
| Injection Flow Rate | 0.1 – 125 l/h | |
| Housing Material | PP (Polypropylene) | The outer body material. Stainless steel means high pressure and a long life. |
| Seal Material | FPM | |
| Connection | 3/4" Male BSP-NPT | Where it connects to the system. A building inlet and a flat’s internal plumbing call for different products. |
| Mixing | Internal |
04Applications
Where Is It Used?
The Hydrakos D25RE050FP00 is used on lines where an additive must be fed into the water in proportion to the flow. The manufacturer states that the Hydrakos series works in water treatment, irrigation, livestock, food processing, industrial process and car wash applications.
Water Treatment LinesProcess Water LinesIrrigation & FertigationLivestock Water LinesCar Wash FacilitiesIndustrial DegreasingMineral DosingRemote Sites Without Power
05How It Works
How Does the Hydrakos D25RE050FP00 Work?
Water Enters the Hydraulic Motor
Pressurised water from the main line enters the pump body and moves the motor piston; no electrical connection is needed.
The Piston Changes Direction
A valve system reverses the piston’s direction of travel; each piston cycle corresponds to a set volume of water passing through the pump.
The Dosing Piston Draws the Product
The motor piston drives a second, dosing piston; the concentrated product is drawn from the chemical tank through the suction hose.
It Mixes at the Selected Rate
The 1–5% setting on the dosing body determines the volume of product delivered on each cycle; the product mixes with the water inside the pump and passes out into the line.
Faster with More Flow, Stops When Flow Stops
The motor speed changes in proportion to the water flow rate; even if flow and pressure fluctuate, the ratio is maintained, and when the water flow is cut, dosing stops by itself.
06Making the Right Choice
Is a 1–5% Rate Right for Your Line?
When choosing the Hydrakos D25RE050FP00, line flow rate, working pressure, the dosing rate required and the material compatibility of the product should be assessed together.
Line Flow Rate
Both the lowest and the highest flow rate of the line should stay within the 10–2,500 l/h range; fluids other than water require the manufacturer’s approval.
Working Pressure
Line pressure should be between 0.3 and 6 bar; where there is a risk of over-pressure or water hammer, protective components should be added.
Dosing Rate
If a rate outside 1–5% is needed, the D25RE020 (0.2–2%) and D25RE100 (3–10%) models in the series can be considered.
Material Compatibility
The PP body suits a wide range of products; where higher chemical resistance is needed, the series includes options with a PVDF body.
07Maintenance and Use
Notes That Keep Dosing Steady
The Hydrakos D25RE050FP00 runs steadily when the manufacturer’s installation and maintenance recommendations are followed.
- The dosing seals should be replaced at least once a year; a worn seal reduces dosing accuracy.
- The pump should be rinsed with clean water as often as possible; product residue should not be allowed to build up inside the body.
- Before changing the dosing rate, the water inlet should be closed and the pressure in the line allowed to fall to zero.
- Depending on water quality, a filter should be fitted ahead of the pump, and the necessary protection against excess flow, over-pressure and water hammer should be installed.
- Local water regulations should be followed during installation, and suitable protective equipment should be used when working with chemical products.
08Frequently Asked Questions
Common Questions
What does the Hydrakos D25RE050FP00 do?
It connects to the main water line and, running on the water’s pressure, mixes a concentrated product into the water at 1–5%. Because the amount injected is proportional to the volume of water passing through, the mixing ratio stays constant even when the flow changes.
Does the Hydrakos D25RE050FP00 need electricity?
No. The pump draws its energy solely from water pressure and flow. It can therefore also be used at points with no power line and in portable dosing setups.
How is the dosing rate set?
The rate is selected between 1% and 5% in percentage steps using the adjustment on the dosing body. Before adjusting, the water inlet should be closed and the pressure in the line allowed to fall to zero.
What does the model code mean?
D25 indicates the pump type, RE adjustable dosing, 050 the maximum rate of 5%, F the FPM seals and P the PP body. The two zeros at the end denote internal mixing and the Western-market version.
Why is it installed with a bypass?
A bypass connection with valves keeps the main line supplying water when the pump is taken out of the circuit for maintenance or adjustment. A filter is placed ahead of the pump depending on water quality, while the suction hose draws the product from the chemical tank.
Which waters and products can it be used with?
The series is designed for dosing liquid or water-soluble products. The PP body is suitable for fresh, salt and deionised water; even so, the compatibility of the product to be dosed with PP and FPM should be confirmed before use.
Does the Hydrakos D25RE050FP00 work at low flow?
According to the manufacturer’s data, the pump works at flow rates between 10 l/h and 2,500 l/h and at pressures of 0.3–6 bar. If the line’s lowest flow rate or pressure falls below this range, the choice of model should be reassessed.
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Installation
Installation is a service · plumbing is the customer’s responsibilityFitting the part falls under our service work and is subject to a service fee. Plumbing labour and any pipes, valves and fittings are not included in the price; these items are the customer’s responsibility.
Warranty
2 years · manufacturerThis product is covered by a 2-year manufacturer warranty. During the warranty period, labour and parts are free for faults arising from manufacture. Consumables such as filters, membranes and resin are outside warranty cover — they are replaced when their service life ends; they do not fail.
Withdrawal and returns
Distance sales agreementThe right of withdrawal and the return terms are set out in detail in the distance sales agreement. Systems that have been installed and commissioned, and made-to-order products, are outside its scope.
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